| 1 |
The elements used to increase the number of free electrons in the semi - conductor belong to: |
2<sup>nd</sup> group
3<sup>rd</sup> group
4<sup>th</sup> group
5<sup>th</sup> group
|
| 2 |
The examples of semi - conductors: |
sodium and potassium
calcium and potassium
Germanium and silicon
carbon and nitrogen
|
| 3 |
The substances through which current con not pass are called: |
Semi - conductors
Insulators
conductors
non - metal
|
| 4 |
The substances through which current can pass easily are called: |
conductors
insulators
Semi - conductors
Non - Electrolytes
|
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